HP 3000 Manuals HP 3000 Manuals
Chapter 1 Getting Started Introduction This section describes the changes required to migrate programs from Business BASIC/V to HP Business BASIC/XL. Business BASIC/V runs on MPE V systems and in compatibility mode on MPE XL systems. HP Business BASIC/XL runs in native mode on MPE XL systems. You can run both interpreted and compiled Business BASIC/V programs in compatibility mode on MPE XL systems. Compatibility mode provides object code compatibility between MPE V systems and MPE XL systems. Business BASIC/V executable program files and libraries, along with the data files and databases required for running those programs, can be moved directly to HP Precision Architecture and run in compatibility mode on the MPE XL system without changes or recompilation. However, you must recompile the application using the native mode (HP Business BASIC/XL) compiler to take advantage of HP Precision Architecture. Few differences exist between the syntax and semantics of Business BASIC/V and HP Business BASIC/XL. Most differences between the two arise from machine and operating system dependencies. All differences are outlined in this manual. There is a migration aid that helps make necessary changes. The migration aid is described in chapter 4, "Migrating Business BASIC/V Files". Chapter 3, "Evaluating Changes You Need to Make," describes features of HP Business BASIC/XL that are changed or missing to Business BASIC/V users. Detailed information about changing Business BASIC/V programs to make them compatible with HP Business BASIC/XL is also provided. Features that are new to Business BASIC/V users are described in chapter 6, "Enhancing and Optimizing Migrated Business BASIC/V Applications".
NOTE Source programs that do not use BASIC data files, SPL externals, or FORTRAN 66 externals require few, if any, changes to run in native mode on MPE XL systems. Databases that do not use real data types also require few, if any, changes to run in native mode on MPE XL systems.
This chapter provides a process overview.